RE: [MMUSIC] RE: I-D ACTION:draft-kaplan-mmusic-best-effort-srtp-01.txt

Maybe we could use one a=srtp line for crypto, and another one for
kmgmt?

(i.e., have a different PT for each?) 

> -----Original Message-----
> From: Elwell, John [mailto:john.elwell@siemens.com] 
> Sent: Thursday, October 26, 2006 5:56 AM
> To: Hadriel Kaplan; Audet, Francois (SC100:3055); mmusic@ietf.org
> Subject: [MMUSIC] RE: I-D 
> ACTION:draft-kaplan-mmusic-best-effort-srtp-01.txt
> 
> Hadriel, Francois,
> 
> Thanks for working on this update. Just one point. If both 
> SDescriptions and MIKEY are offered (inclusion of a=crypto 
> and a=key-mgmt lines) and a different payload type is also 
> indicated for SRTP, this payload type would apply whether the 
> SDescription-derived key or the MIKEY-derived key is used.
> So until the SDP answer arrives, it would still not be 
> possible to render SRTP. Of course, in the case of 
> SDescriptions it is not possible anyway, but in the case of 
> certain MIKEY options it ought to be possible. Unfortunately 
> to resolve this we would need somewhat more complex syntax in 
> the a=srtp line.
> 
> John
> 
> > -----Original Message-----
> > From: Internet-Drafts@ietf.org [mailto:Internet-Drafts@ietf.org]
> > Sent: 25 October 2006 20:50
> > To: i-d-announce@ietf.org
> > Subject: I-D ACTION:draft-kaplan-mmusic-best-effort-srtp-01.txt
> > 
> > A New Internet-Draft is available from the on-line Internet-Drafts 
> > directories.
> > 
> > 
> > 	Title		: Session Description Protocol (SDP) 
> > Offer/Answer Negotiation For Best-Effort Secure Real-Time Transport 
> > Protocol
> > 	Author(s)	: F. Audet, H. Kaplan
> > 	Filename	: draft-kaplan-mmusic-best-effort-srtp-01.txt
> > 	Pages		: 17
> > 	Date		: 2006-10-25
> > 	
> > This document defines the requirements and a proposed solution for 
> >    an SDP Offer/Answer exchange model for negotiating 
> best-effort SRTP
> >    keys, i.e., in a backward-compatible manner with 
> non-SRTP devices.
> >    The proposed solution is a trivial interpretation of the 
> usage of 
> >    the profile and the usage of SDP indication of [sdesc] 
> and [kmgmt].
> > 
> > A URL for this Internet-Draft is:
> > http://www.ietf.org/internet-drafts/draft-kaplan-mmusic-best-e
> > ffort-srtp-01.txt
> > 
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